Biology for IGCSE & O level - Gas Exchange In Humans (Section 3 - No. 6)
During exercise, which of the following is likely to occur? (Select all that apply)
Increased breathing rate.
Decreased breathing rate.
Increased tidal volume.
Decreased tidal volume.
Explanation
Exercise increases the body's oxygen demand, so the breathing rate and the amount of air per breath (tidal volume) increase.
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